2,5-吡啶二羧酸及碳酸根构筑的三维Sm-Cu配合物的合成及晶体结构研究

Synthesis, Structure of a 3D Sm-Cu Complex Based on 2,5-Pyridinedicarboxylate Acid and Carbonate Ligands

近年来,以多羧酸为配体的稀土-过渡金属配位聚合物由于其拓扑结构的多样性和在磁性、催化、化学吸附、光学性质和电子导体等方面的功能特性已经受到研究人员的广泛关注。由于稀土元素与过渡元素相比较他们具有各自不同的配位模式，合成结构新颖的带有三维结构的稀土-过渡配位聚合物就目前来说还是一种挑战。

A complex {[Sm2Cu（pydc）2（CO3）2（H2O）2]·2H2O}n （H2pydc=2,5-pyridinedicarboxylate acid） was synthesized by hydrothermal condition. It was characteristic by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. The structure of the complex reveals that it is a three-dimensional framework. The crystal belongs to monoclinic system, space group P21. The cell parameters are： a=0.960 8（2） nm, b=0.789 6（2） nm, c=1.551（3） nm, β=101.85 （3）°, V=1.151 9 （4） nm3, Z=2. The Sm ions and CO32-formed an infinite 2D plane, the plane connected by 2, 5-pyridine dicarboxylic acid and copper ions, formed a 3D structure with micro-channel. CCDC： 736228.